Summary

The Factory Method pattern solves the problem of object creation by delegating the implementation of objects based on specific classes to a factory, which then handles the instantiation. This architecture ensures the base factory class remains flexible and does not need to know which specific concrete classes will be needed during runtime. In this design, each factory subclass knows exactly which concrete class it must call to instantiate, allowing it to delegate to its respective subclasses to create the required objects. Furthermore, if the specific subclass lacks an overloaded constructor, the underlying factory class automatically delegates to a base constructor to ensure at least one instance is created. For instance, in the context of the Language model, the Language class defines the grammar representation along with an interpreter that uses the representation to interpret sentences. Additionally, the Language maps a domain to a language, and the language maps a hierarchical object-oriented design, thereby establishing a complete loop of definition through an object-oriented system.

Title

Design Patterns | Object Oriented Design

Description

Design Patterns are reusable solutions to commonly occuring problems. Design patterns were started as best practices that were applied again and again to similar problems encountered in different contexts.

Keywords

object, click, zoom, objects, factory, example, java, patterns, design, common, pattern, abstract, subclasses, singleton, method, factories, class

NS Lookup

A 172.67.133.249, A 104.21.25.96

Dates

Created 2026-04-14

Updated 2026-04-14

Summarized 2026-04-25